Adjustable ventilator



Feb. 7, 1933.

V. F. ESPENSCHIED ADJUSTABLE VENTILATOR Filed March 28, 1928 INVENTOR. Vsrgll F. Espenschzea.

Patented Feb. 7, 1933 UNITED STATES PATENT OFFICE VIRGIL F. ESPENSCHIED, OF HARTVILLE, OHIO`,\ASSIGNOR`, BY MSNE ASSIGNMENTS, TO THE SCHUMACHER CORPORATION, OF HARTYILL, OHIO, A CORPORATION' OF OHIO ADJUSTABLE VENTILATOR j Application led March `28, 1928.k Serial No.l 265,395.

This invention relates to ventilators of the louver type, which comprise metal sheets with louvers stamped therein. Adjustable ventilators of this type-have been made for some time but they have been ex ensive for, so far as known, the adjustable eatures have been obtained by the addition of wings or extensions upon the ends of a louver metal sheet.

The invention herein described affords a new combination of frame members comprising or containing the metal sheets withsliding connections between the frame members, so that the devices are cheaply, easily and economically manufactured and operate satisfactorily at all times. The ventilator shown herein can be made much cheapei` than former types of adjustable metal louver ventilators, and the advantages will be appreciated by those familiar with the prior ventilator of this form.

The preferred form of the invention is shown in the drawing, and will be described in detail, but it will be understood that changes and modifications may be made therein and that the invention is not limited to the details of construction except as set forth in the attached claim or as limited by the prior art.

In the drawing, n

Figure 1 is a side elevation of a complete adjustable louver ventilator unit;

Figure 2 is a cross section on the line 2 2 of Figure 1; and

Figure 3 is a section at right'angles to Figure 2 at the ends of the parts of the units.

Each ventilator comprises two units or sections 1 and 2 vwhich are substantially identical in construction, except that they are oppositely placed. Each unit constitutes a frame member and consists of arallel rails 3 at the top andbottom and o a `vertical or cross stile 4 at the end serving to unite the 'V and lower rails and in these grooves are slidin similar grooves on the section 1. The'P blocks afford-the sliding interlocking connec.v I *i tonfor the two sections of the ventilator, and separation ofthe sections is prevented by contact of these stops When the ventilator yis opened to its greater extent. The rails 3 and the Stiles 4 may be made of wood for lightness and economy of manufacture although the invention is not necessarilylimited to wooden frame members. It will'beobserved that the sliding connection between the frame memeach section, are provided with narrowj grooves 8 and in these grooves are located the sheet metal plates 10 which are provided with the louver formations 12, stamped up from the metal. The size and arrangement of the louvers may be varied, as dictated by the requirements. Any suitable means maybe employed'to retain the plate 10 in position, a single nail 14 through the vertical stile being sufficient. It will be observed that the louvers are shown arranged in groups, the louvers of each group being spaced from the louvers of the adjacent group by an intermediate strip extending transversely of the individual louvers, the louvers being spaced, preferably, at a distance less than the length of the louvers. The result of this construction is to insure that, at any position of horizontal adjustment, the louvers in one of the sheets are always opposed by louvers in the other or overlapping sheet, whereby direct passage of air is always secured through the metal sheets. Exact horizontal alignment of the individual louvers is not essential so long as the groups of louvers are placed oppositely to one another.

The free edges of the sheets remote from the Stiles may be ribbed or corrugated as at 15 for strengthening purposes and the edges may be bent inwardly as at 16 to close the spaces between the sheets and also to serve as stops, either in conjunction with or as a substitute for the blocks.

It will be noted that a very simple, effective and economical adjustable louver ventilator has been provided and that in operation it will always be readily adjustable. In addition, the sliding members of the ventilator cannot sag or Warp as is the ease with many adjustable, metal ventilators of this type.

What is claimed is:

A horizontally adjustable ventilator corn'- prising tvvo frame members, adjustable sliding connections between the frame members, the frame members comprising overlapping metal sheets and louvers stamped inV said sheets, an intermediate strip extending transversely of said louvers and spacing the louvers on each side thereof, the louver openings in the metal sheets being oppositely disposed, the adjustable sliding- Connections spacing the sheets at a suiieient distance to permit free adjustment of the frame members Without interference between the louvers, the inner end of each sheet being bent to form a stop cooperating to limit the movement of the members, one of said stops being of a greater depth than the other so as to extend close to the surface of the other sheet.

VIRGIL F. ESPENSCHIED. 

